CN109327781B - Loudspeaker module and electronic equipment - Google Patents
Loudspeaker module and electronic equipment Download PDFInfo
- Publication number
- CN109327781B CN109327781B CN201811368270.2A CN201811368270A CN109327781B CN 109327781 B CN109327781 B CN 109327781B CN 201811368270 A CN201811368270 A CN 201811368270A CN 109327781 B CN109327781 B CN 109327781B
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- CN
- China
- Prior art keywords
- module
- boss
- shell
- conductive plastic
- metal insert
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/026—Supports for loudspeaker casings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
Abstract
The invention discloses a loudspeaker module and electronic equipment. The loudspeaker module comprises a module middle shell and a module upper shell arranged on the module middle shell, wherein an injection molding steel sheet is arranged on the module upper shell, and a built-in static electricity removing structure is arranged on the module middle shell; the static electricity removing structure comprises a conductive plastic part and a metal insert connected with the conductive plastic part, and the metal insert is injected into the middle shell of the module; the conductive plastic part is fixed on the module middle shell in a secondary injection molding mode and is configured to be conducted with external equipment; the metal insert is connected with the injection molding steel sheet. According to the invention, the conductive plastic part is injection-molded and mounted on the middle shell, so that the product structure is reduced, the product appearance is optimized, the purpose of static electricity removal is realized, and the yield of the product is improved.
Description
Technical Field
The present invention relates to an electroacoustic transducer, and more particularly, to a speaker module and an electronic device provided with a built-in static eliminator.
Background
When the existing loudspeaker module is used, the problem of poor effect caused by damage or interference due to the action of static electricity can be caused. The reason why the speaker module generates static electricity is that, on one hand, the module housing itself also generates weak electricity when being applied or working, and the continuously accumulated static electricity generates higher voltage when being released, so that components inside the module housing are easily damaged, and the product fails. On the other hand, other electronic components connected to the speaker module or other internal structures of the electronic device may generate static electricity, and the static electricity is conducted to the inside of the speaker module through the contact with the housing. If the static electricity in the module housing cannot be released in time, some fragile electronic components inside the module housing can be damaged. The prior art means for removing static electricity mainly comprises welding a steel sheet outside the loudspeaker shell and leading static electricity out through the steel sheet, but the means has the following problems,
firstly, when the external steel sheets are welded, the shell is easily damaged due to high temperature, so that the appearance is influenced;
secondly, when steel sheets are welded outside, the welding position of the steel sheets and the angle of the welding position are not easy to determine, so that the assembly precision is poor and the product yield is influenced;
in addition, the mode of externally welding the steel sheet has welding marks after the rear end of the steel sheet is welded and assembled, so that the overall appearance is poor.
Therefore, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a new technical scheme of a loudspeaker module.
According to a first aspect of the invention, a loudspeaker module is provided, which comprises a module middle shell and a module upper shell arranged on the module middle shell, wherein an injection molding steel sheet is arranged on the module upper shell, and a built-in static electricity removing structure is arranged on the module middle shell;
the static electricity removing structure comprises a conductive plastic part and a metal insert connected with the conductive plastic part, and the metal insert is injected into the middle shell of the module;
the conductive plastic part is fixed on the module middle shell in a secondary injection molding mode and is configured to be conducted with external equipment;
the metal insert is connected with the injection molding steel sheet.
Optionally, the conductive plastic part comprises a body and a cantilever, a boss is formed at a position, used for arranging the metal insert, of the module middle shell, the body is fixed on the boss of the module middle shell in a secondary injection molding mode, and one end of the cantilever is connected with the upper surface of the body.
Optionally, the metal insert includes two parallel short arms and a long arm connecting the two short arms, the long arm is injection-molded in the boss, one of the short arms is a first short arm, the other short arm is a second short arm, the second short arm is connected with the conductive plastic part, and the first short arm is connected with the injection-molded steel sheet.
Optionally, the first short arm is exposed from a bottom surface of the boss, and the second short arm is exposed from an upper surface of the boss.
Optionally, the upper surface of the second short arm is flush with the upper surface of the boss.
Optionally, the module further comprises a module lower shell, the module lower shell is arranged on one side, opposite to the module upper shell, of the module middle shell, a through hole is formed in the position, corresponding to the boss, of the module lower shell, and the body is installed in a matched mode with the through hole.
Optionally, one end of the cantilever protrudes to the outside of the module lower case.
Optionally, a groove is formed in a position where the injection molding steel sheet is connected with the metal insert, and the metal insert is clamped in the groove.
Optionally, a partition plate for separating the front sound cavity and the rear sound cavity is arranged on the module middle shell, and the boss is arranged on the partition plate.
According to another aspect of the present invention, there is provided an electronic device including the speaker module according to any one of the above aspects.
The invention has the advantages that the structure of the product can be lightened and the appearance of the product is optimized by installing the conductive plastic part on the middle shell by injection molding, thereby realizing the purpose of static elimination and improving the yield of the product. In the prior art, the accuracy and yield of products are affected by externally welded steel sheets. Therefore, the technical task to be achieved or the technical problems to be solved by the present invention are never thought or anticipated by those skilled in the art, and therefore the present invention is a new technical solution.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic overall structure diagram of an embodiment of a speaker module according to the present invention.
Fig. 2 is a schematic top view of a speaker module according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view a-a of an embodiment of a speaker module of the present invention.
Fig. 4 is a schematic structural diagram of a static electricity removing structure of a speaker module according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to fig. 1 and fig. 2, a speaker module according to an embodiment of the present invention is provided. The loudspeaker module comprises a module middle shell 2 and a module upper shell 1 arranged on the module middle shell 2, wherein an injection molding steel sheet is arranged on the module upper shell 1, and a built-in static electricity removing structure is arranged on the module middle shell; the static electricity removing structure comprises a conductive plastic part and a metal insert connected with the conductive plastic part, and the metal insert is injected into the middle shell of the module; the conductive plastic part is fixed on the module middle shell in a secondary injection molding mode and is configured to be conducted with external equipment; the metal insert is connected with the injection molding steel sheet.
In the embodiment of the invention, the middle shell 2 of the loudspeaker module is manufactured by one-time injection molding, the static electricity removing structure enables an injection molding steel sheet to be communicated with the shell of the equipment through the metal insert 22 and the conductive plastic part 21, static electricity on the injection molding steel sheet is firstly conducted to the metal insert 22, then is conducted to the conductive plastic part through the metal insert 22, and finally is conducted to the shell of the external equipment through the cantilever 212 of the conductive plastic part 21, and when a user holds the equipment by hands, the static electricity on the shell is conducted to the ground through the human body.
The conductive plastic part 21 is fixed on the module middle case 2 by a secondary injection molding method. Compare with the mode of welding the steel sheet, adopt electrically conductive working of plastics 21 in the scheme of this application, when processing, directly mould plastics through the mould secondary and fix on the mesochite, avoided the electrically conductive working of plastics process of installation in addition. Meanwhile, the position and the shape of the conductive plastic part 21 can be well controlled, and the produced product has good precision and high yield.
In an alternative embodiment of the present invention, the conductive plastic part 21 includes a body 211 and a cantilever 212, a boss 23 is formed at a portion of the module middle case 2 where the metal insert 22 is disposed, the body 211 is fixed on the boss 23 of the module middle case 2 by a secondary injection molding method, and one end of the cantilever 212 is connected to an upper surface of the body 211.
Further, a concave portion is correspondingly disposed on the top of the boss 23, for cooperating with the conductive plastic body 211.
After the installation is accomplished, cantilever 212 becomes the contained angle of settlement with module inferior valve 3 surface, and cantilever 212 one end is fixed on body 211, and the tip of free end has a minor segment and inferior valve surface parallel arrangement, and this one section parallel arrangement's structure is favorable to cantilever 212 can be connected with the abundant contact of outside electrically conductive casing after the equipment, better derives static.
In another alternative embodiment of the present invention, the metal insert 22 comprises two parallel short arms and a long arm connecting the two short arms, for example, the long arm 223 is perpendicular to the short arms. The long arms are molded into the boss 23, and one of the short arms is a first short arm 221, and the other short arm is a second short arm 222, wherein the first short arm 221 is exposed from the bottom surface of the boss 23, and the second short arm 222 is exposed from the upper surface of the boss 23. The upper surface of the second short arm 222 is flush with the upper surface of the boss 23.
The metal insert 22 is used for communicating the injection-molded steel sheet with the conductive plastic part 21, so that static electricity on the injection-molded steel sheet is conducted to the conductive plastic part 21, and then the static electricity is led out to the outer shell through the conductive plastic part 21.
Further, referring to fig. 3 and 4, the first short arm 221 of the metal insert is connected with the injection-molded steel sheet 12. For example, the first short arm 221 is connected to the injection-molded steel sheet 12 by welding, conductive adhesive bonding, or the like. The second short arm 222 is connected to the body of the conductive plastic member 21. For example, the conductive plastic member 21 is directly connected to the second short arm 222 during the injection molding process.
The metal insert 22 is fixed inside the boss 23 by injection molding, the vertically arranged long arm 223 is embedded in the boss 23, and the two short arms extend out of the upper and lower surfaces of the boss and are respectively in contact connection with the injection-molded steel sheet 12 and the conductive plastic part 21.
In addition, the upper surface of the second short arm 222 and the upper surface of the boss 23 are flush or slightly protruded from the upper surface of the boss 23, so as to achieve the connection with the conductive plastic member 21.
When the upper surface of the second short arm 222 is flush with the upper surface of the boss 23, the space is saved, the thickness of the whole device is reduced, and the product is light and thin.
In another embodiment of the present invention, the speaker module further includes a module lower case, the module lower case 3 is disposed on one side of the module middle case 2 opposite to the module upper case 1, a through hole is formed at a position of the module lower case 3 corresponding to the boss 23, and the body 211 of the conductive plastic member 21 is fitted with the through hole.
The size of the through hole is matched with that of the boss 23, and the boss is just clamped at the through hole during installation, so that the fixing effect is achieved.
Further, the upper portion of the boss 23 exposes the surface of the module lower case 3. The cantilever 211 of the conductive plastic part 21 is located outside the module lower case 3, and is used for conducting static electricity out after being connected with a case of an external device. That is, when the module lower case 3 is mounted on the module middle case 2, the upper portion of the boss 23 protrudes through the through hole, the upper surface of the boss exceeds the upper surface of the module lower case 3, and the cantilever 212 of the conductive plastic member 21 also protrudes outside the through hole, thereby facilitating connection with an external case.
In another alternative embodiment of the invention, a groove 11 is arranged at the position where the injection-molded steel sheet 12 of the module upper shell 1 is connected with the metal insert 22, and the metal insert is clamped in the groove 11.
The groove 11 can assist in mounting and fixing, plays a limiting role on the other hand, and simultaneously ensures that the metal insert and the injection molding steel sheet can be in closer contact.
In an alternative embodiment of the present invention, the speaker module further includes a diaphragm assembly 4 and a magnetic circuit assembly 5 disposed between the module lower case 3 and the module middle case 2.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A loudspeaker module is characterized by comprising a module middle shell and a module upper shell arranged on the module middle shell, wherein an injection molding steel sheet is arranged on the module upper shell, and a built-in static electricity removing structure is arranged on the module middle shell;
the static electricity removing structure comprises a conductive plastic part and a metal insert connected with the conductive plastic part, and the metal insert is injected into the middle shell of the module;
the conductive plastic part is fixed on the module middle shell in a secondary injection molding mode and is configured to be conducted with external equipment;
the metal insert is connected with the injection molding steel sheet.
2. The speaker module as claimed in claim 1, wherein the conductive plastic part comprises a body and a cantilever, a boss is formed at a position of the middle housing of the module, where the metal insert is arranged, the body is fixed on the boss of the middle housing of the module by means of secondary injection molding, and one end of the cantilever is connected with the upper surface of the body.
3. The speaker module as in claim 2, wherein the metal insert comprises two parallel short arms and a long arm connecting the two short arms, the long arm being molded into the boss, one of the short arms being a first short arm and the other being a second short arm, the second short arm being connected to the conductive plastic, the first short arm being connected to the molded steel sheet.
4. A speaker module as claimed in claim 3, wherein the first short arm is exposed from a bottom surface of the boss and the second short arm is exposed from an upper surface of the boss.
5. The speaker module as claimed in claim 4, wherein the upper surface of the second short arm is flush with the upper surface of the boss.
6. The speaker module of claim 2, further comprising a module lower housing disposed on an opposite side of the module middle housing from the module upper housing,
the module lower shell is provided with a through hole at a position corresponding to the boss, and the body is installed in a matching way with the through hole.
7. The speaker module as claimed in claim 6, wherein one end of the cantilever projects outside the module lower case.
8. A loudspeaker module according to claim 1, wherein the module top shell is provided with a recess in which the metal insert is snap fitted.
9. A loudspeaker module according to claim 2, wherein a partition is provided on the module center housing for separating the front and rear acoustic chambers, the boss being provided on the partition.
10. An electronic device, characterized in that: comprising a loudspeaker module as claimed in any one of claims 1-9.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368270.2A CN109327781B (en) | 2018-11-16 | 2018-11-16 | Loudspeaker module and electronic equipment |
| US17/294,443 US11395054B2 (en) | 2018-11-16 | 2018-12-27 | Speaker module |
| PCT/CN2018/124433 WO2020098102A1 (en) | 2018-11-16 | 2018-12-27 | Loudspeaker module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368270.2A CN109327781B (en) | 2018-11-16 | 2018-11-16 | Loudspeaker module and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109327781A CN109327781A (en) | 2019-02-12 |
| CN109327781B true CN109327781B (en) | 2020-09-22 |
Family
ID=65258206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811368270.2A Active CN109327781B (en) | 2018-11-16 | 2018-11-16 | Loudspeaker module and electronic equipment |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US11395054B2 (en) |
| CN (1) | CN109327781B (en) |
| WO (1) | WO2020098102A1 (en) |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000079834A1 (en) * | 1999-06-16 | 2000-12-28 | Phonak Ag | Hearing aid worn behind the ear and plug-in module for a hearing aid of this type |
| AU774934B2 (en) * | 1999-06-16 | 2004-07-15 | Phonak Ag | Behind-the-ear hearing aid |
| JP4541171B2 (en) * | 2005-01-28 | 2010-09-08 | 京セラ株式会社 | Electronics |
| US20070104340A1 (en) * | 2005-09-28 | 2007-05-10 | Knowles Electronics, Llc | System and Method for Manufacturing a Transducer Module |
| JP2007129305A (en) * | 2005-11-01 | 2007-05-24 | Sharp Corp | Speaker |
| CN201150126Y (en) * | 2008-01-11 | 2008-11-12 | 瑞声声学科技(常州)有限公司 | Loudspeaker accessory circuit |
| CN102111701A (en) * | 2009-12-25 | 2011-06-29 | 富准精密工业(深圳)有限公司 | Horn |
| CN201657296U (en) * | 2010-03-29 | 2010-11-24 | 瑞声光电科技(常州)有限公司 | Micro vocal device |
| CN204014011U (en) * | 2014-05-22 | 2014-12-10 | 歌尔声学股份有限公司 | Loud speaker module |
| WO2016060725A1 (en) * | 2014-10-17 | 2016-04-21 | Illinois Tool Works Inc. | System and method for grounding a fuel intake system |
| JP6146405B2 (en) * | 2014-12-26 | 2017-06-14 | トヨタ自動車株式会社 | Engine and engine manufacturing method |
| CN204425606U (en) * | 2015-01-29 | 2015-06-24 | 瑞声光电科技(常州)有限公司 | Loud speaker and mobile communication terminal |
| CN204518065U (en) * | 2015-04-10 | 2015-07-29 | 歌尔声学股份有限公司 | Loud speaker |
| CN205142515U (en) * | 2015-12-02 | 2016-04-06 | 歌尔声学股份有限公司 | Loudspeaker module |
| CN205283806U (en) * | 2015-12-31 | 2016-06-01 | 歌尔声学股份有限公司 | Loudspeaker module group |
| CN205793299U (en) * | 2016-05-26 | 2016-12-07 | 歌尔股份有限公司 | Speaker module |
| CN205847772U (en) * | 2016-06-20 | 2016-12-28 | 歌尔股份有限公司 | Antistatic module casing and speaker module |
| CN106102367B (en) * | 2016-06-20 | 2022-02-25 | 歌尔股份有限公司 | Anti-static module shell and application thereof |
| CN206575596U (en) * | 2017-03-23 | 2017-10-20 | 江西联创宏声电子股份有限公司 | Loudspeaker module |
| CN207475806U (en) * | 2017-12-11 | 2018-06-08 | 深圳市立得尔克五金有限公司 | A kind of antistatic metal earphone housing |
-
2018
- 2018-11-16 CN CN201811368270.2A patent/CN109327781B/en active Active
- 2018-12-27 US US17/294,443 patent/US11395054B2/en active Active
- 2018-12-27 WO PCT/CN2018/124433 patent/WO2020098102A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| US11395054B2 (en) | 2022-07-19 |
| US20210409853A1 (en) | 2021-12-30 |
| CN109327781A (en) | 2019-02-12 |
| WO2020098102A1 (en) | 2020-05-22 |
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